Attn:all Turbo Guys

[detjoe]

do what TJ says...Dont rely on bigger is better. Parish made alot of power using that LS6 cam.

[Quik]

when used in boost the LS6 cam peaks at 5500 and drastically drops off at 5800 like it hit a brick wall. So with that being said you can make power with a stock cam but a cam better suited to the build will make the combo perform like its intended to.

 

 

however i guess the whole big cams dont work theory doesnt apply to my setup. a 4.8 with a 230/236 cam on 14 psi made a few ponies shy of 700 rwhp. on a super rich 16psi did 702...

 

properly sized cam for the rpm range the turbo breathes will really shine

[zippy]

Making over 700RWHP if you cam worked for you I'd assume you also ran well into the low 10's? Cam selection with a turbo isn't just about how much power it can put down. Spool time is a big concern when it comes to cam selection with a turbo. Too big of a cam with a turbo car/truck nets you a big mph at the big end and a much slower time than that level of power should be capable of.

[hellbents10]

Chris's truck ran 11.0@127 with an LS6 cam I would say it worked OK. It peaked at 5600 but got down the track in good fashion. Dave's LQ9 GTO makes 825rwhp with an LS6 cam at 5400, and 847rwtq at 4400 and pulls like a dump truck from 3k rpm and up. Steve's 5.3l with an LS6 cam made 681rwhp through a 14 bolt 35" tires, and an 80e.

 

...oh and all of these vehicle idled and drove like stock around town. Two of these were with BW 83mm turbine wheels too.

 

It all about the combo as a whole.

[Quik]

and those vehicles listed above all peaked early as i stated. does it work? yes, do other cams work? yes. is the LS6 the almighty of boosted cams not even close but it does work if you want an early peaking setup that drops off drastically. gear the setup so its in your favor for that rpm range

 

but if your going to crack open the motor to install a cam get one that is better suited for your application

 

 

 

Making over 700RWHP if you cam worked for you I'd assume you also ran well into the low 10's? Cam selection with a turbo isn't just about how much power it can put down. Spool time is a big concern when it comes to cam selection with a turbo. Too big of a cam with a turbo car/truck nets you a big mph at the big end and a much slower time than that level of power should be capable of.

 

never tried for 10s, driveline, suspension, gearing play a huge role in how a vehicle 1320's not just power

Edited January 14, 2010 by Quik (see edit history)

[zippy]

10's in the NBS Silverado doesn't take a fancy suspension. A set of Cal Trac's (or similar) and good shock's with a sticky tire has been enough for 1.4 60's. As for gearing, after spending enough to make 700RWHP $200 for the right gear isn't out of the question. The rest of the driveline should be enough I'd assume or you've wasted your time making 700RWHP unless you were only planning to race the truck on the street in roll on races.

[Quik]

10's in the NBS Silverado doesn't take a fancy suspension. A set of Cal Trac's (or similar) and good shock's with a sticky tire has been enough for 1.4 60's. As for gearing, after spending enough to make 700RWHP $200 for the right gear isn't out of the question. The rest of the driveline should be enough I'd assume or you've wasted your time making 700RWHP unless you were only planning to race the truck on the street in roll on races.

nice way to try and make a jab at me. however your little jab has nothing to do with the OP's post.

Edited January 15, 2010 by Quik (see edit history)

[blackbeast ss]

nice way to try and make a jab at me. however your little jab has nothing to do with the OP's post.

[zippy]

nice way to try and make a jab at me. however your little jab has nothing to do with the OP's post.

 

 

It wasn't a jab, it was a response. As for anything to do with the post I could really care less. This isn't PT.net and I can post on the topic at hand or respond to someone. I agree that a custom camshaft for his application would be the best way to go. The LS6 cam however does work very well with turbo applications due to it's tight profile. Commonly the turbo applications make more power with a reverse split, but the spool is faster with a standard exhaust heavy split. Without having to get fancy with picking a camshaft an LS6 cam could be ran and make big power with a great idle and excellent vacuum. My point to you is that a dyno number isn't all there is to camshaft choice as you were making your 700RWHP 4.8L appear for your example. It's a great number, yes. The big camshaft theory still applies since a cam that big with a 4.8L and a turbo makes for great power if you can keep it in it's powerband and keep the boost up (once you get boost up). Keep up the work you've been doing as it's looking to be fun. Hopefully you'll get the results you want more than just on the dyno.

[Quik]

It wasn't a jab, it was a response. As for anything to do with the post I could really care less. This isn't PT.net and I can post on the topic at hand or respond to someone. I agree that a custom camshaft for his application would be the best way to go. The LS6 cam however does work very well with turbo applications due to it's tight profile. Commonly the turbo applications make more power with a reverse split, but the spool is faster with a standard exhaust heavy split. Without having to get fancy with picking a camshaft an LS6 cam could be ran and make big power with a great idle and excellent vacuum. My point to you is that a dyno number isn't all there is to camshaft choice as you were making your 700RWHP 4.8L appear for your example. It's a great number, yes. The big camshaft theory still applies since a cam that big with a 4.8L and a turbo makes for great power if you can keep it in it's powerband and keep the boost up (once you get boost up). Keep up the work you've been doing as it's looking to be fun. Hopefully you'll get the results you want more than just on the dyno.

 

cam preference is all in the person as for what is actually large and what isnt. the old setup had plenty of power just the powerband was higher then what most would prefer to have.

 

to inform you on how you stated how easy it is to get a nbs into the 10s. DJM 4" drop doesnt work with caltrax, so not an option, wasnt going to swap out shocks just for a ET since its more of a overall street truck then a strip. Clutches for 4700lb trucks are nonexistant for any kind of power but toss in the mix of shifting at 7500-7600 makes mass even harder to deal with. then you have gearing and a higher gear isnt always best for turbo setups as some state. so with all that beind spoke on it goes directly in relation to suspension, gearing and driveline being ideal for the combo. You just cant sit there and make the bold statement as you did since it doesnt apply to everyone.

 

and im sure you like jabs at ppl so to inform you never made a pass at 700rwhp however at 12-13 psi i trapped 122. got best 12.1 and nothing better then 2.2 cause of clutch issues. this combo was removed from truck and the 88mm is going into the camaro, a set of twin 62s are going in the silverado for more of a tow setup. so to you and the rest of the internet greats need to know all facts before you make a statment

 

 

 

 

 

so with that all being said you dont have to be afraid of a larger cam when using it in boosted setups

[hellbents10]

No-one is afraid of the large cam, just it defiantly is not the way to go. The cam in the 2000hp LSX at the shop is big yes, but in a street vehicle with under 370ci I would stay in the 22x duration range and still haul the mail at the track.